Director Natural History Museum, U. Kansas, professor system and ecology, since 1995.

Achievements

Achievements include research on origin, evolution, relationships, paleocology and systematics of early Tertiary and Mesozoic mammals, especially primates, artiodactyls, insectivores and multituberculates. African Neogene hominids and microfaunal paleontology.

Works

Other Work

Editor Science Publications, since 1986.

Membership

Member American Association for the Advancement of Science, Society Vertebrate Paelontology, Paleontology Society.